Various reasons for the size variation of mobile phone micro motor stamping parts

Mobile phone micro motor stamping parts, with the increase in the number of mobile phones in the market, the demand for stamping parts is also increasing. While focusing on efficient production, quality control is particularly important. In order to quickly and effectively solve the problem and resume production, Dongguan Precision has used several years of production experience to summarize the reasons that affect the size variation of mobile phone micro-motor stamping parts as follows. 1. Knife edge wear: The hair is too large or the size becomes larger (cut shape); becomes smaller (punching); flatness is not good. Re-grind or replace the die. 2. There is no guide: the guide pin or other positioning device has no effect, the feeder is not loosened or the guide pin diameter is different, and the guide cannot be corrected. The positioning block is worn and the feed distance is too long. 3. The die is too short: the camber becomes larger, the chamfer is not enough, and the forming is incomplete. 4. Insufficient escape holes: squeezed or injured or deformed. Clear the escape hole or increase the escape hole and depth. 5. Insufficient ejection: poor feeding, bent strips, poor stripping, upper die pulling, and extended ejection. 6. Improper ejection: improper preparation of ejector pins, improper spring force or excessive ejection. Adjust the elastic force or change the position or the number of pins; pin grinding is short to match. 7. Poor guide material: the length of the guide plate is not too large or the guide gap is too large, or the die and the feeder are skewed or the distance between the die and the feeder is too long. 8. Deformation of blanking: Some bending parts cannot allow overlapping of materials, and must be dropped every time, or the strain of the disc shape can be overcome by pressure pad or shearing à. 9. Bending deformation: squeeze the material at the upper bend; the proximal hole is deformed by tensile force, and the force is unevenly bent à the inclined punch is not long enough. 10. Punching and shearing deformation: the material is distorted and uneven, the size increases or the eccentricity is asymmetrical. 11. Impact deformation: the mobile phone micro motor stamping parts blow out the air pressure is too strong or the gravity falls and impacts deformation. 12. Floating chip extrusion: Extrusion variation such as the floating of waste materials or the remaining fine chips on the die surface or foreign objects. 13. Improper material: Material width or thickness, improper material or material hardness, will produce defects. 14. Poor design: poor engineering arrangements and poor clearance settings are difficult to overcome unless the design is changed.